Scope
This standard specifies the inspection cycle, inspection items, inspection conditions, inspection methods, and rules for gas appliances. This standard applies to gas relays (hereinafter referred to as relays) as the rules and basis for relay inspection Normative reference documents are essential for the application of this standard. For all notes: the version of Phase 1 is written in English, and only the version of Phase F is applicable to this standard. The latest version (including all modification orders) of any referenced document without H period is applicable to this standard GB/T191-2008 Packaging, Storage and Transportation Pictorial Symbols
GB 4208-2008 Housing Protection Level (IP Code)
GB/T 7595-2008 Quality Specification for Transformer Oil in Operation
DL/T 572-2010 Operating Regulations for Power Transformers
DL/T 573-2010 Maintenance Guidelines for Power Transformers
DL/T 596-1996 Preventive Testing Regulations for Power Equipment
DL/T 474.1-2006 Implementation Guidelines for Field Insulation Testing Insulation Resistance Absorption ratio and polarization index test
JB/T9647-1999 Gas Relay
JJG 20-2001 Standard Glass Gauge Verification Regulation
JJG 875-2005 Digital Pressure Gauge Verification Regulation
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China